Trouble with hair loss problem..

I had a hair loss problem for about four years. Three years back, I visited a hair transplant clinic in Toronto but the doctor suggested that I am too young to do the hair transplant surgery and wait for another couple of years to do that. Finally the surgery was done three months back. The surgery went fine and not much side effects were there after the surgery, other than minor headaches that happens occasionally, which my doctor warned me before the surgery itself. He said transplanted hair may take 3-4 months to start growing and may take about 8-9 months to look as good as normal hair. Does it take that long for everyone undergoing the surgery?